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Revert "Own the sequence buffer"

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This reverts commit 482389a691.
This commit is contained in:
huntc
2022-01-30 16:21:23 +11:00
parent 482389a691
commit 1c67bd4643
4 changed files with 68 additions and 108 deletions
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33
examples/nrf/src/bin/pwm_sequence_ws2812b.rs
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@ -30,6 +30,19 @@ const RES: u16 = 0x8000;
// line is assumed to be P1_05.
#[embassy::main]
async fn main(_spawner: Spawner, p: Peripherals) {
// Declare the bits of 24 bits
let mut color_seq_words = [
T0H, T0H, T0H, T0H, T0H, T0H, T0H, T0H, // G
T0H, T0H, T0H, T0H, T0H, T0H, T0H, T0H, // R
T1H, T1H, T1H, T1H, T1H, T1H, T1H, T1H, // B
];
let color_seq = Sequence::new(&mut color_seq_words, SequenceConfig::default());
let mut reset_seq_words = [RES; 1];
let mut reset_seq_config = SequenceConfig::default();
reset_seq_config.end_delay = 799; // 50us (20 ticks * 40) - 1 tick because we've already got one RES;
let reset_seq = Sequence::new(&mut reset_seq_words, reset_seq_config);
let mut config = Config::default();
config.sequence_load = SequenceLoad::Common;
config.prescaler = Prescaler::Div1;
@ -38,21 +51,7 @@ async fn main(_spawner: Spawner, p: Peripherals) {
p.PWM0, p.P1_05, NoPin, NoPin, NoPin, config,
));
// Declare the bits of 24 bits
let color_seq = Sequence::new(
[
T0H, T0H, T0H, T0H, T0H, T0H, T0H, T0H, // G
T0H, T0H, T0H, T0H, T0H, T0H, T0H, T0H, // R
T1H, T1H, T1H, T1H, T1H, T1H, T1H, T1H, // B
],
SequenceConfig::default(),
);
let mut reset_seq_config = SequenceConfig::default();
reset_seq_config.end_delay = 799; // 50us (20 ticks * 40) - 1 tick because we've already got one RES;
let reset_seq = Sequence::new([RES], reset_seq_config);
unwrap!(pwm.start(color_seq, reset_seq, SequenceMode::Times(2)));
unwrap!(pwm.start(color_seq, Some(reset_seq), SequenceMode::Times(2)));
Timer::after(Duration::from_millis(1000)).await;
@ -60,9 +59,9 @@ async fn main(_spawner: Spawner, p: Peripherals) {
let mut bit_value = T0H;
loop {
if let (Some(mut color_seq), Some(reset_seq)) = pwm.stop() {
if let (Some(color_seq), Some(reset_seq)) = pwm.stop() {
color_seq.words[color_bit] = bit_value;
unwrap!(pwm.start(color_seq, reset_seq, SequenceMode::Times(2)));
unwrap!(pwm.start(color_seq, Some(reset_seq), SequenceMode::Times(2)));
}
Timer::after(Duration::from_millis(50)).await;